Looks are subjective so you have to make up your own mind in that department, but when it comes to fit/finish, quality and standing behind a product - there is one, hands down, choice - Maxton Designs
Their kits are designed and manufactured locally to their HQ in Eastern Europe and sold worldwide by franchise owners or resellers. Cover many makes/models far beyond Tesla as well with a decent and growing 3/Y, S/X offering.
Pro-tip: dont just visit their US or Canadian sites, go to the source and checkout the Polish website for the most recent products and finishes... which eventually trickle down across the EU, UK, and beyond across the ponds and can be ordered via the local franchises directly.
In contrast, RPM is purely a reseller (long-time and fairly successful at that) of all things Aliexpress, Alibaba, eBay and 3rd party Amazon, etc. Nothing wrong with that, but bodykits found here will reflect the quality of the factory in Asia, RPM simply pays it forward.